1 Pc DC 5V 5mW 650nm 6mm Laser Dot Diode Module Red Copper Head Tube Dot-shaped Features: Working life: more than 2000 hours Spot mode: dot facula， continuous output Laser wavelength: 650nm (red) Copper head diameter: 6mm Light power: !#!amp!*!lt;5mW Supply voltage: 5V DC Operating current: !#!amp!*!lt;40mA Operating temperature: -36\u2103 ~ 65\u2103 Power lead length: 120mm Shell material: brass Single weight: 1g Package included: 1 x Laser diode dot